Toms friend J.J, the schools star basketball player, is experiencing a run of bad luck during games, and to make matter worse, rumors are spreading that J.J. is deliberately choking or fixing the game.
While visiting the Blakes farm to observe a well drilling, Tom, Annie, and Paul witness a long-time feud between Bud Howard, a Hydrologist who uses science to locate wells, and Noah Sedgwick, a water witch who douses for wells with a forked stick.
While filling in on a friends paper route, Paul and Joey meet the famous horror film star Nigel Rodgers, who claims his yard is being overtaken by the dangerous and terrifying Mole people.
While exploring the wilderness for fossils, Annie and Lance discover a cave, but before Tom can follow them inside, the mouth of the cave collapses, trapping Annie and Lance inside.
Tom is trying to design an experimental set of laser headphones, Annie is designing the lighting board for a local theatre group, and Lance has designs to meet the girl of his dreams, Juliet in the theatres production of Romero and Juliet
After watching a run of Humphrey Bogart movies in air-conditioned splendor, Paul and Joey hit the street during the summers worst heat wave and begin to see suspicious criminal types at every turn.
The Edison family become charmed by the amazing adventure stories of world famous balloonist Maurice Lafayette, who is in town while his daughter Elaine to raise funds for their next spectacular expedition.
Paul and Joey find themselves in trouble when Paul climbs a fence to retrieve his remote control helicopter which has accidentally crashed onto the high security grounds of a computer chip research company.
Annie leaves Tom holding the shovel on a zoo detail at the Weston Zoo when she remembers to help Paul find information for his school project on ostriches.
In an effort to promote family togetherness, Tom and Annie lure their parents into the annual Weston Fishing Derby. A comedic battle of the sexes ensures when the boys bait the girls into a competition.
Tom, Annie, and Paul are representing Weston in an orienteering contest. They must travel on a trail and look for clues that were placed earlier. Each clue must be deciphered in order to tell them which way to go to find the next clue.
After their campsite is ransacked, Annie insists on finishing the race before their search for the Windigo monster. Paul and Lance lose each other in the forest and alone, Paul overcomes his fear and makes a startling discovery.
After agreeing to give himself up to the forest ranger to clear himself of the charge that he has been vandalizing the forest, Ken Bradley, (the Windigo), mysteriously disappears and Tom and Annie suspect foul play.